K 10
svn:author
V 4
jeff
K 8
svn:date
V 27
2019-12-08T01:15:06.686895Z
K 7
svn:log
V 239
Use a variant slab structure for offpage zones.  This saves space in
embedded slabs but also is an opportunity to tidy up code and add
accessor inlines.

Reviewed by:	markj, rlibby
Differential Revision:	https://reviews.freebsd.org/D22609

END